dev와 composer 버전 일치

vendor/xemlock/htmlpurifier-html5/composer.json

@@ -1,6 +1,7 @@
 {
     "name": "xemlock/htmlpurifier-html5",
-    "description": "HTML Purifier definitions for HTML5 elements",
+    "description": "HTML5 element definitions for HTML Purifier",
+    "keywords": ["HtmlPurifier", "html", "html5", "purifier", "security", "xss", "tidy", "validator"],
     "type": "library",
     "license": "MIT",
     "authors": [
@@ -11,15 +12,16 @@
     ],
     "require": {
         "php": ">=5.2",
-        "ezyang/htmlpurifier": "^4.7"
+        "ezyang/htmlpurifier": "^4.8"
     },
     "require-dev": {
-        "phpunit/phpunit": "4.7.*|5.7.*"
+        "phpunit/phpunit": ">=4.7 <8.0",
+        "php-coveralls/php-coveralls": "^1.1|^2.1"
     },
     "autoload": {
         "classmap": ["library/HTMLPurifier/"]
     },
     "scripts": {
-        "test": "phpunit"
+        "test": "phpunit --coverage-html build/coverage"
     }
 }